/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/SkeletalMeshModifiers/Public/SkeletonModifier.h
FMirrorOptions
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)([BlueprintType](Programming/UnrealArchitecture/Reference/Structs/Specifiers/BlueprintType)) struct FMirrorOptions
bool
bMirrorChildren
bool
bMirrorRotation
FString
LeftString
TEnumAsByte<EA...
MirrorAxis
FString
RightString